CN220556754U - Emergency lighting driving device - Google Patents

Abstract

The application relates to an emergency lighting drive device, which is characterized by comprising: the circuit comprises a microcontroller, a signal processing circuit, a relay control module, a relay and a loop detection circuit; the signal processing circuit is suitable for accessing fire signals, and is electrically connected with the microcontroller, and the microcontroller is electrically connected with the relay through the relay control module; the relay is provided with more than two loop detection circuits, and the more than two relays are electrically connected with the more than two loop detection circuits in a one-to-one correspondence manner; more than two loop detection circuits are electrically connected with the microcontroller; the loop detection circuit is suitable for switching in a load current signal. The method does not carry out forced starting in a direct communication mode of the microcontroller, and related hidden danger caused by communication system faults is avoided.

Description

Emergency lighting driving device

Technical Field

The application relates to the technical field of illumination, in particular to an emergency illumination driving device.

Background

With the trend of high-rise, multifunction and large-scale construction and the enhancement of people's own safety consciousness, the technology of emergency escape and disaster prevention is increasingly important, and the fire-fighting emergency lamp is used as an emergency device, provides a guarantee for the safety of lives and properties of people, and must immediately provide reliable illumination in emergency, and indicate the direction of people's stream evacuation and the position of emergency exits so as to ensure smooth evacuation of people staying in darkness. The forced starting technique of fire emergency equipment in an emergency is increasingly important. The intelligent lighting system of many manufacturers is specially designed and added with a special fire signal detection module. After the module detects the fire-fighting signal, the fire-fighting signal is judged through the internal embedded software, and then the related forced starting or forced closing instruction is sent to the remote intelligent illumination actuator through the software design in a communication mode, so that the control of the illumination system is realized. The fire-fighting signal is responded in a communication mode, and if the remote communication distance is long or the system communication is suddenly abnormal, the forced starting function of the fire-fighting signal cannot be ensured.

How to improve the forced starting effect of fire emergency equipment is an urgent problem to be solved by the technicians in the field.

Disclosure of Invention

In view of this, the application proposes an emergency lighting driving device suitable for improving the forced starting effect of fire emergency equipment.

According to an aspect of the present application, there is provided an emergency lighting driving apparatus, including: the circuit comprises a microcontroller, a signal processing circuit, a relay control module, a relay and a loop detection circuit;

the signal processing circuit is suitable for accessing fire signals, and is electrically connected with the microcontroller, and the microcontroller is electrically connected with the relay through the relay control module;

the relay is provided with more than two loop detection circuits, and the more than two relays are electrically connected with the more than two loop detection circuits in a one-to-one correspondence manner; more than two loop detection circuits are electrically connected with the microcontroller;

the loop detection circuit is suitable for switching in a load current signal.

In one possible implementation, the signal processing circuit includes: the signal detection circuit and the signal isolation circuit;

the signal detection circuit is electrically connected with the signal isolation circuit; the signal isolation circuit 300 is electrically connected to the microcontroller.

In one possible implementation, the signal detection circuit includes: the rectification circuit and the signal feedback circuit;

the input end of the rectifying circuit is connected with a fire-fighting signal, the output end of the rectifying circuit is electrically connected with the signal feedback circuit, and the signal feedback circuit is electrically connected with the signal isolation circuit.

In one possible implementation, the signal isolation circuit is provided with a photo coupler;

the signal isolation circuit is electrically connected with the microcontroller through the photoelectric coupler.

In one possible implementation, the method further includes: a shift register;

the microcontroller is electrically connected with the relay through the shift register and the relay control module.

In one possible implementation, the loop detection circuit includes: a mutual inductor and an operational amplifier circuit;

the relay is electrically connected with the transformer;

the mutual inductor is electrically connected with the microcontroller through the operational amplifier circuit.

In one possible implementation, the operational amplifier circuit is provided with two operational amplifiers.

In one possible implementation, the relays are provided with 6.

In one possible implementation, the device further comprises a voltage conversion circuit;

the output end of the voltage conversion circuit is electrically connected with the operational amplifier circuit.

In one possible implementation, the microcontroller is model STM32F103C8T6.

The beneficial effects are that: the microcontroller directly controls the contacts of the relay control module to be closed or opened, and the microcontroller does not forcedly start or forcedly close the instruction to the illumination executor in a communication mode; meanwhile, the fire-fighting signal is directly connected to the signal processing circuit, and the signal processing circuit transmits the processed fire-fighting signal to the microcontroller, so that related hidden dangers caused by signal abnormality and communication system faults are avoided, and the fire-fighting emergency equipment can be timely and forcedly started and closed.

Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features and aspects of the present application and together with the description, serve to explain the principles of the present application.

FIG. 1 illustrates a connection diagram of an emergency lighting drive device according to an embodiment of the present application;

FIG. 2 illustrates a circuit diagram of a pin connector of an embodiment of the present application;

FIG. 3 shows a circuit diagram of a signal detection circuit and a signal isolation circuit according to an embodiment of the present application;

FIG. 4 shows a partial circuit diagram of a microcontroller of an embodiment of the present application;

FIG. 5 shows a circuit diagram of a bus signal conditioning circuit of a microcontroller of an embodiment of the present application;

FIG. 6 shows a circuit diagram of a dialing circuit of a microcontroller of an embodiment of the present application;

FIG. 7 shows a circuit diagram of a relay control module of an embodiment of the present application;

fig. 8 shows a partial enlarged circuit diagram of a relay, loop detection circuit of an embodiment of the present application;

fig. 9 shows a circuit diagram of a relay, loop detection circuit of an embodiment of the present application;

fig. 10 shows a circuit diagram of a voltage conversion circuit of an embodiment of the present application;

fig. 11 shows a main body structure diagram of an emergency lighting driving apparatus according to an embodiment of the present application.

Detailed Description

Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers indicate identical or functionally similar elements. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

It should be understood, however, that the terms "center," "longitudinal," "transverse," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," and the like indicate or are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the utility model or simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

In addition, numerous specific details are set forth in the following detailed description in order to provide a better understanding of the present application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, methods, means, elements, and circuits have not been described in detail as not to unnecessarily obscure the present application.

FIG. 1 illustrates a connection diagram of an emergency lighting drive device according to an embodiment of the present application; FIG. 2 illustrates a circuit diagram of a pin connector of an embodiment of the present application; fig. 3 shows a circuit diagram of a signal detection circuit 200 and a signal isolation circuit 300 according to an embodiment of the present application; fig. 4 shows a partial circuit diagram of a microcontroller 100 of an embodiment of the present application; fig. 5 shows a partial circuit diagram of a microcontroller 100 of an embodiment of the present application; fig. 6 shows a partial circuit diagram of a microcontroller 100 of an embodiment of the present application; fig. 7 shows a circuit diagram of relay control module 410 of an embodiment of the present application; fig. 8 shows a partial enlarged circuit diagram of the relay 600, the loop detection circuit 700 of the embodiment of the present application; fig. 9 shows a circuit diagram of the relay 600, the loop detection circuit 700 of the embodiment of the present application; fig. 10 shows a circuit diagram of a voltage conversion circuit of an embodiment of the present application; fig. 11 shows a main body structure diagram of an emergency lighting driving apparatus according to an embodiment of the present application. As shown in fig. 1, the emergency lighting driving apparatus includes: microcontroller 100, signal processing circuit 800, relay control module 410, relay 600, loop detection circuit 700; the signal processing circuit 800 and the loop detection circuit 700 are suitable for accessing fire signals, the signal processing circuit 800 is electrically connected with the microcontroller 100, and the microcontroller 100 is electrically connected with the relay 600 through the relay control module 410; the relay 600 is electrically connected to the loop detection circuit 700; the loop detection circuit 700 is electrically connected with the microcontroller 100; the relay 600 is provided with two or more relays, and each of the two or more relays 600 is electrically connected to the loop detection circuit 700.

Here, the fire signal is externally provided. Typically 24-36V and above. The external power supply is not provided under normal conditions, and after fire alarm, 24-36V direct current power supply is provided. The signal processing circuit 800 is directly connected to the FIRE-fighting signals FIRE1 and FIRE2, and satisfies the non-polarity connection of the FIRE-fighting signals, and as the FIRE-fighting signals FIRE1 and FIRE-fighting signals FIRE2 are differential voltage signals, the signal processing circuit 800 converts the level and converts the 12V FIRE-fighting signals into logic levels which can be identified by the microcontroller 100, and meanwhile, the power signals are isolated and converted, so that the occurrence of abnormality of the FIRE-fighting signals is avoided; the microcontroller 100 judges the starting and stopping of the FIRE signal by detecting the fire_in logic level and controls the relay control module 410 to be closed, the relay control module 410 turns on and off the relay 600 by closing and opening contacts, the relay 600 is ensured to act as required, the relay 600 is suitable for starting illumination or closing illumination loads, more than two relays 600 are electrically connected with the loop detection circuit 700, and the loop detection circuit 700 is electrically connected with the microcontroller 100; the microcontroller 100 is adapted to determine the operating state of the lighting load via the loop detection circuit 700, forming a complete lighting detection loop. The microcontroller 100 directly controls the contacts of the relay control module 410 to be closed or opened, and does not force a start or close command to the illumination actuator in a communication manner; meanwhile, as the fire-fighting signal is directly connected to the signal processing circuit 800, the signal processing circuit 800 transmits the processed fire-fighting signal to the microcontroller 100, and related hidden dangers caused by signal abnormality and communication system faults are avoided, so that the fire-fighting emergency equipment can be timely and forcedly started and closed. When an emergency occurs, the signal processing circuit 800 firstly detects and processes the fire-fighting signal, so that the microcontroller 100 can successfully identify the fire-fighting signal, and effectively avoid the interference and damage of signal abnormality to the whole circuit and the interference to forced starting; when the microcontroller 100 judges that the fire signal is in a starting state, the controller 100 forcedly controls the relay control module 410 to close contacts so as to close the relay 600; the loop detection circuit 700 is connected with a load current signal, the microcontroller 100 is electrically connected with the loop detection circuit 700, and the microcontroller 100 can judge the working state of the load through the loop detection circuit 700, so that a control loop is formed, and the control and the supervision of the lighting load are facilitated.

In one possible implementation, the signal processing circuit 800 includes: a signal detection circuit 200 and a signal isolation circuit 300; the signal detection circuit 200 is electrically connected to the signal isolation circuit 300; the signal isolation circuit 300 is electrically connected to the microcontroller 100. Here, it should be noted that the signal detection circuit 200 is adapted to access FIRE signals FIRE1 and FIRE2, satisfy the non-polarity connection of the FIRE signals, convert the level and transmit the converted 12V FIRE signals to the signal isolation circuit 300; the signal isolation circuit 300 is suitable for converting a 12V fire signal into a logic level which can be identified by the microcontroller 100, and isolating and converting a power signal, so as to avoid interference of forced starting caused by abnormal fire signal.

In one possible implementation, the signal detection circuit 200 includes: the rectification circuit and the signal feedback circuit; the input end of the rectifying circuit is connected with a fire-fighting signal, the output end of the rectifying circuit is electrically connected with a signal feedback circuit, and the signal feedback circuit is electrically connected with the signal isolation circuit 300. Here, the rectifying circuit is adapted to rectify and filter the input fire signal, and the signal feedback circuit performs level conversion and outputs the fire signal to the signal isolation circuit 300; meanwhile, the transmission state of the fire-fighting signal can be fed back.

Further, as shown in FIG. 3, FIRE signals FIRE1, FIRE2 are introduced from pin connector P1; the rectifying circuit is a bridge rectifying circuit formed by four diodes (a diode D6, a diode D8, a diode D10 and a diode D11), and the FIRE-fighting signals FIRE1 and FIRE-fighting signals FIRE2 are rectified by the bridge rectifying circuit. The rectification circuit is also connected with a capacitor C7, one electrode of the capacitor C7 is grounded, and the other electrode of the capacitor C7 is connected with a fire-fighting signal. The 2 nd pin of the triode BG1 is electrically connected with the capacitor C7 and can be connected with a fire signal; the 3 rd pin of the triode BG1 outputs a stable voltage of 12V; the 1 st pin of the triode BG1 is electrically connected with the 3 rd pin of the triode Q4; the 2 nd pin of the triode Q4 outputs a stable voltage of 12V; the 1 st pin of the triode Q4 is electrically connected with the voltage stabilizing tube ZD 2. One end of a resistor R37 is connected to a circuit for connecting the 2 nd pin of the triode BG1 with the capacitor C7, and the other end of the resistor R37 is electrically connected with the 1 st pin of the triode BG 1. One end of a resistor R40 is connected to a circuit for connecting the 2 nd pin of the triode BG1 and the capacitor C7, and the other end of the resistor R40 is connected between the triode Q4 and the voltage stabilizing tube ZD 2. One electrode of the capacitor C8 is connected to a circuit for outputting voltage at the 3 rd pin of the triode BG1, and the other electrode of the capacitor C8 is grounded; one end of the diode D9 is connected to a circuit of the 3 rd pin output voltage of the triode BG1, and the other end of the diode D9 is grounded. The 3 rd pin of the relay K5 is electrically connected with the diode D9; the 4 th pin of the relay K5 is grounded; the 1 st pin and the 2 nd pin of the relay K5 output feedback signals BACK1 and BACK2. Here, the FIRE-fighting signals FIRE1 and FIRE-fighting signals FIRE2 are differential voltage signals, and four diodes (diode D6, diode D8, diode D10, diode D11) are used to form a bridge rectifier circuit, so that the non-polarity connection of the FIRE-fighting signals can be satisfied. The back is connected with 47UF capacitor C7 to prevent the influence of instantaneous opening or closing of fire signal to the circuit and ensure the stable change of circuit voltage. After bridge rectification, the voltage is filtered by a charging capacitor C7 and then passes through a triode BG1, a voltage stabilizing tube ZD2 is connected with the base electrode of a triode Q4 to form a series voltage negative feedback circuit, and the circuit can obtain stable voltage output of 12V. The diode D9 is provided with a reverse protection mechanism, the relay coil is driven by voltage, the relay K5 is controlled to be switched, and dry contact signals are output at the BACK1 and the BACK2, namely fire-fighting signals are fed BACK and output. The circuit adopts bridge rectification, can meet the requirement of nonpolar access, namely stable 12V voltage can be obtained no matter positive level or negative level.

In one possible implementation, the signal isolation circuit 300 is provided with a photo coupler; the signal isolation circuit 300 is electrically connected to the microcontroller 100 through a photocoupler. Here, it should be noted that: the microcontroller 100 cannot directly recognize the 12V FIRE signal and requires the photocoupler to convert to a logic level FIRE IN that the microcontroller 100 can recognize. After the isolation of the photoelectric coupler, the power supply signal is isolated and converted, so that the abnormality of the fire-fighting signal is avoided, and the fire-fighting signal is directly connected into the microcontroller 100 to cause circuit damage.

Further, as shown in fig. 3, the 1 st pin of the photoelectric coupler is connected to +12v voltage output by the signal feedback circuit through a resistor R42; the 4 th pin of the photoelectric coupler outputs +3.3V voltage and outputs the isolated and converted FIRE IN logic level; the 2 nd pin and the 3 rd pin of the photoelectric coupler are grounded. After the fire-fighting signal is introduced, after the fire-fighting signal detection circuit 200 acquires a 12V power supply, the 12V voltage is poured into the light-emitting diode of the photo coupler PC817 through the current-limiting resistor R42, and the light-emitting diode is turned on. The internal transistor of the photocoupler is turned on and the FIRE_IN signal is pulled low. After the FIRE signal is cancelled, no 12V power is applied and the photocoupler is turned off, and pin 4 is high, i.e., signal fire_in is high.

In one possible implementation, the output of the optocoupler is electrically connected to the microcontroller 100. As shown, pin 4 of the optocoupler is electrically connected to pin 17 of the microcontroller 100 and is adapted to output the FIRE IN logic level to the microcontroller 100. Here, the logic control unit of the microcontroller 100 determines the start and stop of the FIRE signal by detecting the high/low logic level of the FIRE signal fire_in, and forcibly starts the relay 600 by the internal logic control.

In one possible implementation, relay 600 employs a magnetic latching relay. Further, after the fire signal is started, the microcontroller 100 forcedly controls the relay control module 410 to close contacts, so that the relay 600 is started, other communication control functions are timely disabled, and other control interference is avoided from forcedly starting. After the fire signal is canceled, the microcontroller 100 activates the communication control function and the manual control function is restored. In this way, the fire control signal can be ensured to have the first priority, and other control modes are invalid. When the fire signal fails, the module can normally receive the instruction of the system and execute relevant control according to the instruction.

Further, the relay control module 410 is provided with two relay control modules U1 and U4 respectively; here, the relay control module 410 controls the operation of the magnetic latching relay 600 through the high current output advantage of the darlington tube. The output end CTRL of the microcontroller 100 outputs high and low levels to control the corresponding O1-O8 contacts to be closed and opened, so that the voltage control of the magnetic latching coil of the relay is realized, and the relay 600 is ensured to act as required. Further, the contact point O1 and the contact point O2 of the relay control module U1 are two contact points of the relay 600, meanwhile, the contact point 01 is connected with a 220V live wire, the contact point O2 is connected with a lighting load, and the other end of the lighting load is grounded, so that a loop is formed. Since 6 relays 600 are provided, 12 contacts, that is, 12 contacts in fig. 11, are provided in total.

In one possible implementation, the method further includes: a shift register 400; the microcontroller 100 is electrically connected to the relay 600 through the shift register 400 and the relay control module 410. Further, the shift register 400 is provided with two shift registers U2 and U3, respectively; the two shift registers 400 are connected in one-to-one correspondence with the two relay control modules 410.

As shown in fig. 4, the 18 th pin of the microcontroller 100 is electrically connected to the 14 th pin (SER terminal) of the shift register U2; the 19 th pin of the microcontroller 100 is electrically connected with the 11 th pin (SRCLK terminal) of the shift register U2; the 20 th pin of the microcontroller 100 is electrically connected with the 12 th pin (RCLK terminal) of the shift register U2; the 16 th pin (VCC end) and the 10 th pin of the shift register U2 are electrically connected with the output end of the voltage conversion circuit to be connected with +3.3V voltage; the 13 th pin and the 8 th pin of the shift register U2 are grounded. The 15 th pin of the shift register U2 is electrically connected with the 8 th pin of the relay control module U1 to output CTRRL1_1; the 1 st pin of the shift register U2 is electrically connected with the 7 th pin of the relay control module U1 to output CTRRL1_2; the 2 nd pin of the shift register U2 is electrically connected with the 6 th pin of the relay control module U1 to output CTRR2_1; the 3 rd pin of the shift register U2 is electrically connected with the 5 th pin of the relay control module U1 to output CTRR2_2; the 4 th pin of the shift register U2 is electrically connected with the 4 th pin of the relay control module U1 to output CTRR3_1; the 5 th pin of the shift register U2 is electrically connected with the 3 rd pin of the relay control module U1 to output CTRR3_2; the 6 th pin of the shift register U2 is electrically connected with the 2 nd pin of the relay control module U1 to output CTRR4_1; the 7 th pin of the shift register U2 is electrically connected with the 1 st pin of the relay control module U1 to output CTRR4_2. The 11 th to 18 th pins of the relay control module U1 are electrically connected to two or more relays 600.

As shown in fig. 4 and 7, the 21 st pin of the microcontroller 100 is electrically connected to the 14 th pin (SER terminal) of the shift register U3; the 22 nd pin of the microcontroller 100 is electrically connected with the 12 th pin (RCLK terminal) of the shift register U3; the 25 th pin of the micro-controller 100 is electrically connected with the 11 th pin (SRCLK terminal) of the shift register U3; the 16 th pin and the 10 th pin of the shift register U3 are electrically connected with the output end of the voltage conversion circuit to be connected with +3.3V voltage; the 13 th pin and the 8 th pin of the shift register U3 are grounded. The 15 th pin of the shift register U3 is electrically connected with the 8 th pin of the relay control module U4 to output CTRL 5-1; the 1 st pin of the shift register U3 is electrically connected with the 7 th pin of the relay control module U4 to output CTRL 5-2; the 2 nd pin of the shift register U3 is electrically connected with the 6 th pin of the relay control module U4 to output CTRR6_1; the 3 rd pin of the shift register U3 is electrically connected with the 5 th pin of the relay control module U4 to output CTRR6_2; the 4 th pin of the shift register U3 is electrically connected with the 4 th pin of the relay control module U4 to output CTRL 7-1; the 5 th pin of the shift register U3 is electrically connected with the 3 rd pin of the relay control module U4 to output CTRL 7-2; the 6 th pin of the shift register U3 is electrically connected with the 2 nd pin of the relay control module U4 to output CTRR8_1; the 7 th pin of the shift register U3 is electrically connected with the 1 st pin of the relay control module U4 to output CTRR8_2. The 11 th to 18 th pins of the relay control module U1 are electrically connected with more than two relays 600; the 11 th to 18 th pins of the relay control module U4 are also electrically connected to two or more relays 600.

In one possible implementation, relay 600 is electrically connected to loop detection circuit 700; the loop detection circuit 700 is electrically connected to the microcontroller 100. The loop detection circuit 700 is adapted to determine and check the operating state of the lighting load.

In one possible implementation, the loop detection circuit 700 includes: a transformer 710 and an operational amplifier circuit; relay 600 is electrically connected to transformer 710; the transformer 710 is electrically connected to the microcontroller 100 through an operational amplifier circuit. It should be noted that, after the relay 600 is closed, if the loop detection circuit 700 has a load current signal, the load current signal may be detected through the transformer 710, the weak voltage may be obtained through the R9, the amplified signal may be processed through the operational amplification circuit, and the amplified signal may be sent to the ADC-CH8 end of the microcontroller 100 for sampling, so as to determine whether the load is in a working state, so as to implement the feedback function of the whole loop detection circuit 700.

Further, as shown in fig. 7 and 8, the 1 st pin of the relay K1 is electrically connected with the 11 th pin of the relay control module U1; the 2 nd pin of the relay K1 is electrically connected with the 12 th pin of the relay control module U1; the 5 th pin of the relay K1 is connected with +24V voltage; the 3 rd pin of the relay K1 is electrically connected with the 16 th pin of the contact pin connector P1; the 4 th pin of the relay is electrically connected with the 4 th pin of the transformer L1; the 3 rd pin of the mutual inductor L1 is electrically connected with the 9 th pin of the contact pin connector P1 to be accessed into OUTCON_1; the 4 th pin of the mutual inductor L1 is electrically connected with the 10 th pin of the pin connector P1 to be accessed into OUTCON_2; the 1 st pin of the transformer L1 is grounded; the 2 nd pin of the transformer L1 is electrically connected with the operational amplifier circuit; resistor R9 is connected between pins 1 and 2 of transformer L1. When the relay K1 is closed, the 4 th pin of the transformer L1 can be connected to the OUTCON_2 to directly acquire a load current signal. After the transformer L1 senses a current signal, as two coils are arranged inside the transformer L1, the number of turns is different, one coil is connected with the resistor R9 in series, the 2 nd pin one end of the transformer L1 can generate micro current, and the micro current generates voltage through the resistor R9, samples the voltage and transmits the voltage to the microcontroller 100.

In one possible implementation, the relay 600 is provided with 6; the 6 relays 600 are all electrically connected to the relay control module 410. Here, 6 relays 600 are connected to the relay control module U1 and the relay control module U4, respectively. As shown in fig. 7 and 9, the 1 st pin of the relay K1 is electrically connected with the 11 th pin of the relay control module U1; the 2 nd pin of the relay K1 is electrically connected with the 12 th pin of the relay control module U1; the 1 st pin of the relay K2 is electrically connected with the 13 th pin of the relay control module U1; the 2 nd pin of the relay K1 is electrically connected with the 14 th pin of the relay control module U1; the 1 st pin of the relay K3 is electrically connected with the 15 th pin of the relay control module U1; the 2 nd pin of the relay K3 is electrically connected with the 16 th pin of the relay control module U1; the 1 st pin of the relay K4 is electrically connected with the 17 th pin of the relay control module U1; the 2 nd pin of the relay K4 is electrically connected with the 18 th pin of the relay control module U1; the 1 st pin of the relay K1 is electrically connected with the 15 th pin of the relay control module U4; the 2 nd pin of the relay K7 is electrically connected with the 16 th pin of the relay control module U4; the 1 st pin of the relay K8 is electrically connected with the 17 th pin of the relay control module U4; the 2 nd pin of the relay K8 is electrically connected with the 18 th pin of the relay control module U4. The relay 600 is closed when the voltage is connected to the 2 nd pin of the relay, and the relay 600 is opened when the voltage is connected to the 1 st pin of the relay.

The 6 transformers of the 6 relays 600 are connected to the pin connector P1. As shown in fig. 2 and 9, the 3 rd pin of the transformer L1 is electrically connected to the 9 th pin of the pin connector P1 to access outcon_1; the 4 th pin of the transformer L1 is electrically connected with the 10 th pin of the pin connector P1 to access OUTCON_2. The 3 rd pin of the transformer L2 is electrically connected with the 11 th pin of the pin connector P1 to be accessed into OUTCON_3; the 4 th pin of the transformer L2 is electrically connected with the 12 th pin of the pin connector P1 to access OUTCON_4. The 3 rd pin of the transformer L3 is electrically connected with the 13 rd pin of the pin connector P1 to be accessed into OUTCON_5; the 4 th pin of the transformer L3 is electrically connected with the 14 th pin of the pin connector P1 to access OUTCON_6. The 3 rd pin of the transformer L4 is electrically connected with the 15 th pin of the pin connector P1 to be accessed into OUTCON_7; the 4 th pin of the transformer L4 is electrically connected with the 16 th pin of the pin connector P1 to access OUTCON_8. The 3 rd pin of the transformer L7 is electrically connected with the 4 th pin of the pin connector P1 to be accessed into OUTCON_13; the 4 th pin of the transformer L1 is electrically connected with the 5 th pin of the pin connector P1 to access OUTCON_14. The 3 rd pin of the transformer L8 is electrically connected with the 7 th pin of the pin connector P1 to be accessed into OUTCON_15; the 4 th pin of the transformer L8 is electrically connected with the 8 th pin of the pin connector P1 to access OUTCON_16.

In one possible implementation, the operational amplifier circuit is provided with two operational amplifiers. As shown in fig. 8, the 3 rd pin of the first operational amplifier is electrically connected with the 2 nd pin of the transformer L1 through a resistor R7; the 2 nd pin of the first operational amplifier is grounded through a resistor R2; the 4 th pin of the first operational amplifier is connected with +3.3V voltage; the 11 th pin of the first operational amplifier is grounded; the 1 st pin of the first operational amplifier is electrically connected to the 13 th pin of the microcontroller 100 through a resistor R5. The 6 th pin of the second operational amplifier is electrically connected with the 2 nd pin of the transformer L1 through a resistor R13; the 17 th pin of the second operational amplifier is grounded through a resistor R2; the 4 th pin of the second operational amplifier is connected with +3.3V voltage; the 11 th pin of the second operational amplifier is grounded; the 7 th pin of the second operational amplifier is electrically connected with the 13 th pin of the microcontroller 100 through a resistor R15, and a capacitor C1 is arranged on a circuit of the two operational amplifiers electrically connected with the 13 th pin of the microcontroller 100.

In one possible implementation, the relay 600 is provided with 6; the 6 relays 600 are all electrically connected to the microcontroller 100. Here, the number of relays 600 is not limited in this application. As shown in fig. 9, 6 relays 600 are electrically connected to the 13 th, 12 th, 11 th, 10 th, 14 th, and 15 th pins of the microcontroller 100, respectively.

In one possible implementation, the device further comprises a voltage conversion circuit; the output of the voltage conversion circuit is electrically connected to the microcontroller 100. The voltage conversion circuit is suitable for converting +24V voltage into +3.3V voltage required by the operational amplifier circuit. Further, as shown in fig. 10, the voltage conversion circuit includes a transistor Q1 and a voltage conversion chip 500; the voltage conversion chip 500 adopts an SPX3819 chip; the 3 rd pin of the triode Q1 is connected with +24V voltage through a resistor R39 and a rectifier; the 2 nd pin of the triode Q1 is electrically connected with the 1 st pin of the voltage conversion chip 500 through a capacitor C13; the 1 st pin of the triode Q1 is grounded through a voltage stabilizing tube ZD 1; the 2 nd pin of the voltage conversion chip 500 is grounded; the 5 th pin of the voltage conversion chip 500 outputs +3.3v voltage; the capacitors C11, C12, and C13 are electrically connected to the circuit of the voltage conversion chip 500 that outputs +3.3v voltage at the 5 th pin.

In one possible implementation, the microcontroller 100 is model STM32F103C8T6. As shown, pin 34 of microcontroller 100 is electrically connected to pin 2 of the debug interface; pin 37 of the microcontroller 100 is electrically connected to pin 3 of the debug interface; pin 38 of the microcontroller 100 is electrically connected to pin 4 of the debug interface; pin 39 of the microcontroller 100 is electrically connected to pin 5 of the debug interface; pin 40 of the microcontroller 100 is electrically connected to pin 6 of the debug interface; pin 44 of the microcontroller 100 is grounded; pin 5 of the microcontroller 100 is grounded through capacitor C24; pin 5 of the microcontroller 100 is grounded through capacitor C25; pin 7, pin 1, pin 24, pin 36, pin 48, pin 9 of the microcontroller 100 all have access to +3.3v voltage; the fire_in FIRE signal is accessed at pin 17 of the microcontroller 100. The 1 st pin of the 2SD882 is electrically connected to the 45 th pin of the microcontroller 100, and the 1 st pin of the 2SD882 is connected to +24V voltage; the 3 rd leg of 2SD882 is coupled to ground through resistor R90. The 46 th pin of the microcontroller 100 is electrically connected with the LED lamp, and is adapted to indicate the operating state of the microcontroller 100.

In one possible implementation, the method further includes: module ID configuration 110 and a dialing circuit; the microcontroller 100 is electrically connected with the dialing circuit, and the module ID configuration 110 module is electrically connected with the dialing circuit; here, it should be noted that the intelligent lighting system is a bus system, and a plurality of emergency lighting driving devices may be connected. Further, 8 dialing circuits are provided, and the module ID configuration 110 can number (0-255) each emergency lighting driving device through the dialing circuit before power-on, and the microcontroller 100 reads the number after starting and reports the number to the system for bus communication between the subsequent and upper computers, for example: the 8 dialing circuits, one host can be connected with 256 emergency lighting driving devices at most, only two emergency lighting driving devices are needed to be used, if the two emergency lighting driving devices are identical in name, communication cannot be carried out, the microcontroller 100 reads the ID, the emergency lighting driving devices are numbered, and then the state of the relay 600 of the emergency lighting driving device can be reported to the upper computer through a communication protocol. Further, the 33 rd pin of the microcontroller 100 is electrically connected with the 1 st pin of the dial switch, and the 1 st pin of the dial switch is connected with 3.3V voltage through a resistor R43; the 32 nd pin of the microcontroller 100 is electrically connected with the 2 nd pin of the dial switch, and the 2 nd pin of the dial switch is connected with 3,3V voltage through a resistor R44; the 31 st pin of the microcontroller 100 is electrically connected with the 3 rd pin of the dial switch, and the 3 rd pin of the dial switch is connected with 3,3V voltage through a resistor R45; the 30 th pin of the microcontroller 100 is electrically connected with the 4 th pin of the dial switch, and the 4 th pin of the dial switch is connected into 3,3V voltage through a resistor R46; the 29 th pin of the microcontroller 100 is electrically connected with the 5 th pin of the dial switch, and the 5 th pin of the dial switch is connected with 3.3V voltage through a resistor R47; the 28 th pin of the microcontroller 100 is electrically connected with the 6 th pin of the dial switch, and the 6 th pin of the dial switch is connected with 3,3V voltage through a resistor R48; the 27 th pin of the microcontroller 100 is electrically connected with the 7 th pin of the dial switch, and the 7 th pin of the dial switch is connected with 3,3V voltage through a resistor R49; the 26 th pin of the microcontroller 100 is electrically connected with the 8 th pin of the dial switch, and the 8 th pin of the dial switch is connected with 3.3V voltage through a resistor R50.

In one possible implementation, the apparatus further comprises a bus signal conditioning circuit 900; the bus signal conditioning circuit 900 is electrically connected with the microcontroller 100; as shown, the bus signal conditioning circuit 900 is provided with a transistor Q2 and a transistor Q3; 2sd882 is selected for transistor Q2; further, pin 1 of transistor Q2 is electrically connected to pin 45 of microcontroller 100 through resistor R87; the 2 nd pin of the transistor Q2 outputs +24V voltage; the 3 rd pin of the transistor Q2 is grounded through a resistor R90; pin 43 of the microcontroller 100 is electrically connected to pin 3 of the transistor Q3, and pin 3 of the transistor Q3 outputs +3.3v voltage; the 2 nd pin of the transistor Q3 is grounded; the first pin of the transistor Q3 is electrically connected to the upper computer via a resistor R88. In the communication process, the upper computer transmits 0-24V high-low level, wherein in the logic level, the high level represents 1, the low level represents 0, 24V is transmitted when transmitting the high level, and 0V is transmitted when transmitting the low level; the transistor Q3 converts 0-24V voltage into 0-3.3V voltage by receiving high and low levels; facilitating identification by the microcontroller 100. Meanwhile, under the action of the transistor Q2, the high-level 24V voltage is reduced to 23.3V output; at low level, transistor Q3 is off, outputting at 24V. The up-going power generation adopts a current loop mode, and the down-going power generation adopts a voltage signal. The upper computer can detect the change of the high level and the low level through the square wave, so that the analysis processing is carried out to determine what kind of data is received.

The traditional intelligent illumination forced starting module responds to fire signals in a communication mode, and once the system communication is abnormal, the forced starting function of the fire signals cannot be guaranteed. In the application, the fire-fighting signal is directly connected to the microcontroller 100, and the microcontroller 100 directly controls the relay 600, so that related hidden dangers caused by communication faults are avoided.

The existing many factories connect FIRE-fighting signals on the host computer, when 24V power is supplied, the host computer can detect the FIRE-fighting signals, then all lighting systems can be forcedly controlled to be started or closed in a communication mode, but in the field practical application, all lighting systems are not required to realize the FIRE-fighting forcedly-started function, the application can be flexibly configured according to the field requirements, namely, a loop with the FIRE-fighting forcedly-started requirements can be configured with an emergency lighting driving device, a common driver can be configured without the loop with the FIRE-fighting forcedly-started requirements, for example, if a certain floor has the FIRE-fighting forcedly-started requirements, the application can be configured in a power distribution cabinet of the floor, the FIRE-fighting signals FIRE1 and FIRE-fighting signals FIRE2 of the floor are accessed, the microcontroller 100 directly forcedly starts the relay 600, the relay 600 is closed, and other control modes can not control the closing and opening of the relay 600, namely, other control modes are invalid. Furthermore, the emergency lighting driving devices of a plurality of floors are simultaneously connected with an upper computer, and the upper computer can simultaneously monitor the working states of the emergency lighting driving devices.

The embodiments of the present application have been described above, the foregoing description is exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (10)

1. An emergency lighting driving apparatus, comprising: the circuit comprises a microcontroller, a signal processing circuit, a relay control module, a relay and a loop detection circuit;

the signal processing circuit is suitable for accessing fire-fighting signals, the signal processing circuit is electrically connected with the microcontroller, and the microcontroller is electrically connected with the relay through the relay control module;

the relay is provided with more than two, the loop detection circuit is also provided with more than two, and the more than two relays are electrically connected with the more than two loop detection circuits in a one-to-one correspondence manner; more than two loop detection circuits are electrically connected with the microcontroller;

the loop detection circuit is suitable for switching in a load current signal.

2. The emergency lighting drive of claim 1, wherein the signal processing circuit comprises: the signal detection circuit and the signal isolation circuit;

the signal detection circuit is electrically connected with the signal isolation circuit; the signal isolation circuit is electrically connected with the microcontroller.

3. The emergency lighting drive of claim 2, wherein the signal detection circuit comprises: the rectification circuit and the signal feedback circuit;

the input end of the rectifying circuit is connected with the fire-fighting signal, the output end of the rectifying circuit is electrically connected with the signal feedback circuit, and the signal feedback circuit is electrically connected with the signal isolation circuit.

4. An emergency lighting driving apparatus according to claim 2, wherein the signal isolation circuit is provided with a photo coupler;

the signal isolation circuit is electrically connected with the microcontroller through the photoelectric coupler.

5. The emergency lighting drive of claim 1, further comprising: a shift register;

the microcontroller is electrically connected with the relay through the shift register and the relay control module.

6. The emergency lighting drive of claim 5, wherein the loop detection circuit comprises: a mutual inductor and an operational amplifier circuit;

the relay is electrically connected with the mutual inductor;

the mutual inductor is electrically connected with the microcontroller through the operational amplification circuit.

7. The emergency lighting drive of claim 6, wherein the operational amplifier circuit is provided with two operational amplifiers.

8. An emergency lighting driving apparatus according to claim 1, wherein the number of the relays is 6, and the number of the loop detection circuits is 6.

9. The emergency lighting drive of claim 6, further comprising a voltage conversion circuit;

the output end of the voltage conversion circuit is electrically connected with the operational amplification circuit.

10. An emergency lighting drive as claimed in claim 1, wherein the microcontroller is of the type STM32F103C8T6.